JPH0228976B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a cold/warm water pine surge shower that alternately changes the discharge temperature of the shower between high and low temperatures, and intermittently stimulates the body due to this temperature change.

(Prior Art) This type of cold/hot water pine surge shower is known from Utility Model Application Publication No. 56-98093. In this system, tap water is alternately distributed between a channel that directly supplies the water to the shower head via a distributor and a channel that supplies the water to the shower head via a heat exchanger that uses hot water in the bathtub as a heat source. It discharges cold water and hot water alternately.
An ejector is installed in the channel that supplies tap water directly to the shower head, which sucks and mixes the warm water in the bathtub.
The ejector effect allows the hot water from the bathtub to be mixed into the cold water to adjust the temperature difference.

(Problems to be Solved by the Invention) In the conventional cold and hot water pine surge shower, it is not possible to control the average temperature of the cold and hot water, and it is also difficult to control the temperature difference between the cold and hot water, making accurate control impossible.

The present invention has been made in view of the above-mentioned problems of the prior art.The purpose of the present invention is to easily and accurately control the average temperature of cold and hot water and the temperature difference between hot and cold water, and to provide a convenient cold and hot water temperature system. It is to provide water pine surge shower.

(Means for Achieving the Object) In order to achieve the above object, the cold and hot water pine surge shower of the present invention connects the hot water outlet pipe of the gas instantaneous water heater to the shower, and the combustion of the water heater is controlled in a predetermined manner. This is a cold/hot water pine surge shower that alternately switches between large and small amounts of heat, and includes an average discharge temperature setting section, a temperature difference setting section, and a water heater that controls the average discharge water temperature and temperature difference set by these setting sections, respectively. Based on the water temperature detected by the inlet water temperature sensor and water flow sensor installed in the water supply pipe, and the shower discharge amount, the ratio and cycle of the large and small combustion times are calculated, and the water heater combustion is determined by the ratio and cycle of the large and small combustion times calculated above. and a control section for controlling.

(Function) In the cold/hot water pine surge shower configured as described above, when the combustion of the water heater reaches the predetermined larger amount of heat, the hot water temperature rises, and when the combustion reaches the smaller amount of heat, the hot water temperature rises. As the temperature decreases, the shower temperature alternates between high and low temperatures.

Then, the cycle of combustion with a large amount of heat and combustion with a small amount of heat is varied according to the temperature difference setting in the temperature difference setting section, and the cycle of combustion with a large amount of heat and combustion with a small amount of heat is varied according to the average discharge temperature setting in the average discharge temperature setting section. The ratio of burning time and burning time with small amount of heat is varied.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows the basic configuration of the cold/hot water pine surge shower device of the present invention, which includes a gas instantaneous water heater A, an operating section B thereof, and a water heater A that operates based on the operation of the operating section B. It is provided with a control section C for controlling the water heater A, and a shower 2 that communicates with the hot water outlet pipe line 1 of the water heater A through a hot water supply pipe 3.

The water heater A has a first heat exchanger 4 for one heat exchanger 4.
Equipped with two burners, a burner 5 and a second burner 6, gas supplied via a gas pipe 7 is burned in the first burner 5 and/or the second burner 6, and is sent to a water supply pipe 8 via a water supply pipe. The supplied water is heated by a heat exchanger 4, flows through a hot water supply pipe 1 to a hot water supply pipe 3, is supplied to a shower 2, and is discharged from the shower 2.

The gas pipe 7 branches halfway into a first gas supply pipe 9 that communicates with the first burner 5 and a second gas supply pipe 10 that communicates with the second burner 6. A valve 11 is provided.

Further, the first gas supply pipe 9 is provided with a first solenoid valve 12, a governor 13, and a proportional valve 14 in this order from the upstream side, and the second gas supply pipe 10 is provided with a second solenoid valve 15 and a governor 16. The former is arranged on the upstream side and provided respectively.

Therefore, when the first solenoid valve 12 is opened, the first burner 5 is supplied with an amount of gas corresponding to the opening degree of the proportional portion 14, and the amount of gas supplied is changed by changing the opening degree of the proportional valve 14. The amount of heat can be changed by changing the amount of heat.

In addition, since a constant amount of gas is always supplied to the second burner 6 by opening the second solenoid valve 15, by repeating the opening and closing of the second solenoid valve 15, intermittent combustion is performed and the time during which the flame is on is reduced. The amount of heat can be changed by changing the amount of time the fire is extinguished.

In the case of this embodiment, the first burner 5 has five burner units 5' and is configured such that the minimum number is 4 and the maximum number is 16, and the second burner 6
is equipped with two single burners 6' and the minimum size is 1.2
The water heater A is configured so that the maximum size is 6, and the water heater A as a whole is 1.2 to 6.
It has the ability of No. 22.

Although the water heater A is not exclusively used for cold and hot water pine surge shower equipment, when it is switched from being used as a normal water heater to cold and hot water pine surge shower equipment, it is configured to alternately burn No. 22 and No. 4, In this embodiment, when burning with No. 22, the first burner 5 and the second burner 6 burn together with the maximum number, and when burning with No. 4, the first burner 5 burns with the minimum number, and when burning with No. 4, the first burner 5 burns with the minimum number, 2 so that the combustion of burner 6 stops.

Switching from the normal use to the cold/hot water pine surge shower is performed by turning on the cold/hot water shower changeover switch 17 of the operating section B.

In addition to the cold/hot water shower changeover switch 17, the operation section B is provided with an average discharge temperature setting section 18 and a temperature difference setting section 19.
Depending on the average discharge temperature set by No. 19 and the temperature difference between high-temperature discharge and low-temperature discharge, the cycle of combustion by No. 22 and combustion by No. 4, and the combustion time by No. 22 and combustion by No. 4 are calculated. The ratio is controlled via control section C.

That is, the control section C is provided in the stand of the water heater A or in the box of the operation section B, electrically communicates with the water heater A and the operation section B, and controls the input signal of the cold/hot water shower changeover switch 17 and the average discharge temperature. setting section 18,
Receiving signals corresponding to the respective set values from the temperature difference setting section 19, the combustion time by No. 22 and the combustion time by No. 4 are calculated, and based on the values, the first solenoid valve 12 and the first solenoid valve of the first burner 5 are operated. A signal is sent to the second electromagnetic valve 15 and the proportional valve 14 of the second burner 6 to cause No. 22 combustion and No. 4 combustion to be performed alternately at the required period and ratio.

For example, water temperature is 15℃, shower discharge amount (flow rate)
10/min, the average discharge temperature is 40℃, and the cycle is set to 10 seconds. If the ratio of combustion t ₁ by No. 22 and combustion t ₂ by No. 4 is X:1-X, then 22X + 4 (1- X) = (40-15) x 10/25 X = 6/18 33% ∴No.22 33% (3.3sec) No.4 67% (6.7sec)

That is, combustion by No. 22 was performed for 3.3 seconds and combustion by No. 4 was performed alternately for 6.7 seconds.

The water temperature is detected by an inlet water temperature sensor 20 provided in the water supply pipe 8, and the flow rate is detected by a water flow sensor 21 provided upstream of the inlet water temperature sensor 20 in the water supply pipe 8. is input.

In the figure, reference numeral 22 denotes a hot water temperature sensor provided in the hot water tap line 1, which detects the hot water temperature during normal use and sends a signal to the control section C.

In addition, during normal use, the control unit C is connected to the water flow sensor 2.
1, the inlet water temperature detected by the inlet water temperature sensor 20, the set temperature set in the operation part B, and the thermal efficiency of the heat exchanger 4 to calculate the amount of heat of the feed forward, and based on the calculated value. The first burner 5 and/or the second burner 6 are fired, and the output temperature detected by the output hot water temperature sensor 22 is used to calculate the feedback heat amount using a proportional gain, and this is added to the feedback heat amount to obtain the final value. It is configured to determine the required amount of heat and adjust the number. Although not shown, the water heater A includes a pilot burner or first and second solenoid valves 1.
Needless to say, an igniter is provided that starts the ignition in synchronization with the opening of valves 2 and 15.

(Effects) Since the present invention has the above configuration, it produces the effects described below.

The cycle of combustion with a large amount of heat and combustion with a small amount of heat is varied according to the temperature difference setting in the temperature difference setting section, and the temperature difference between high temperature discharge and low temperature discharge is automatically adjusted, and the average discharge temperature is set. The average discharge temperature is automatically adjusted by varying the ratio of time spent burning with a large amount of heat and time spent burning with a small amount of heat depending on the average temperature setting in the section. Therefore, it is easy to use, and temperature difference,
It is also easy to control the average temperature.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the overall configuration of the cold/hot water pine surge shower of the present invention, and Fig. 2 is an explanatory diagram showing the relationship between the heat quantity switching of the water heater and the shower temperature. indicate the change in shower temperature, respectively. Figures 3 and 4 are explanatory diagrams showing the relationship between the water heater's calorie switching and the shower temperature, and Figure 3 shows a state in which the cycle of high-calorie combustion and low-calorie combustion is shortened to reduce the temperature difference. , and FIG. 4 respectively show a state in which the average discharge temperature is increased by decreasing the ratio of the time of small heat amount combustion to large heat amount combustion. A: Gas instantaneous water heater, C: Control unit, 1: Hot water outlet pipe, 2: Shower, 8: Water supply pipe, 18: Average discharge temperature setting unit, 19: Temperature difference setting unit, 20: Inlet water temperature sensor, 21: Water amount sensor.

Claims (1)

[Claims] 1. A cold/hot water pine surge shower in which the hot water outlet pipe of the gas instantaneous water heater is connected to the shower, and the combustion of the water heater is alternately switched to two predetermined amounts of heat, large and small, and the average discharge temperature is set. Based on the average water discharge temperature and temperature difference set by these setting parts, the water temperature detected by the inlet water temperature sensor and the water flow sensor installed in the water supply pipe of the water heater, and the shower discharge amount, respectively. A cold/hot water pine surge shower characterized by comprising a control section that calculates the ratio and cycle of large and small combustion times and controls the combustion of the water heater to the calculated ratio and cycle of large and small combustion times.